Irritants/ bites : Solo enlarged nodes are usually reflective of a local process. Irritation of the scalp, a local bug bite, etc.Nodes usually run a 3-4 week cycle of enlrging when stimulated, processing their irritant and returning to resting size. If continuing to enlarge, painful or persisting in an enlarged size after 3-4 wks, i would have it looked at.
Answered 8/10/2013
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